Yeah JW parents they're the best! Let's see, my GF got engaged to a great "worldly" guy after her loser JW husband left her in debt after cheating on her and then taking her to the elders (refusing to talk about his affair w/ the chick from work) and complaining that she was not the "capable wife" as set out in proverbs. He filed for divorce and then abandoned the pursuit after he realized he was paying all the money in attys' fees.
Her parents refused to go to the wedding because she was not "scripturally free to remarry" and the fact that she was marring a worldly guy. Weren't these the same people that sat in the car w/ her when her then JW hubby walked hand in hand w/ his GF from work into GF's apt and spent the night. Ahh, but there was no proof of sex between the two. I am sure they were playing board games and just fell asleep, one on the couch and one in the chair.
Well, all I have to say is that your wedding is YOUR and your fiance's day. Not your parents day. And if they are going to destroy the day by being the typical JW piss ants that they are, DON'T INVITE THEM. You have control over this, not them. I know you want your family there. That is understandable, but in the end, is it worth the emotional turmoil. You want people there who will be happy for you, not make your life a living hell.
And it is not just JWs who have this bad attitude. I have a number of friends that were raised Mormon and Jewish. When they married outside of their faith, their parents did not go to their weddings. What can I say, people are nuts. And parents need to move on with their lives and let their children grow up and live their own life.